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  1. 5th Jul 2026 08:38 #1
    pchan
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    Hi All,

    I am trying to get Avisynth 64bit to work but to no avail. Using VirtualDub 64-bit to open a test.avs that contain only Version().
    I get an error message : AVI Import Filter error: (Unknown) (80040154).
    I go through many rounds with Google AI but I couldn't fix it.

    Thanks in advance
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  2. 5th Jul 2026 09:25 #2
    Alwyn
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    Run the AVISynth Info tool. It might show up some problems.

    https://www.videohelp.com/software/Avisynth-Info-Tool
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  3. 5th Jul 2026 10:18 #3
    pchan
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    I use Google AI again and it suggest that I should install Visual Studio 2015-2022 C++ Redistributable (x64).
    TechPowerUp seems to have the most complete download.
    https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/
    Download the May 2026 version.
    I install both vcredist2015_2017_2019_2022_x64.exe and vcredist2015_2017_2019_2022_x86.exe.

    This fixed my problem. Thanks.
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